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Long-term adaptation of pancreatic response by dogs to dietary fats of different degrees of saturation: Olive and sunflower oil

Published online by Cambridge University Press:  09 March 2007

M. C. Ballesta ,
M. Mañas ,
F. J. Mataix ,
E. Martínez-victoria  and
I. Seiquer
M. C. Ballesta
Affiliation:
Instituto de Nutrición y Tecnología de Alimentos, Departamento de Fisiología, Facultad de Farmacia, Universidad de Granada, Granada, Spain
M. Mañas
Affiliation:
Instituto de Nutrición y Tecnología de Alimentos, Departamento de Fisiología, Facultad de Farmacia, Universidad de Granada, Granada, Spain
F. J. Mataix
Affiliation:
Instituto de Nutrición y Tecnología de Alimentos, Departamento de Fisiología, Facultad de Farmacia, Universidad de Granada, Granada, Spain
E. Martínez-victoria
Affiliation:
Instituto de Nutrición y Tecnología de Alimentos, Departamento de Fisiología, Facultad de Farmacia, Universidad de Granada, Granada, Spain
I. Seiquer
Affiliation:
Instituto de Nutrición y Tecnología de Alimentos, Departamento de Fisiología, Facultad de Farmacia, Universidad de Granada, Granada, Spain
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Abstract

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Mongrel dogs were fed, from weaning to 9 months of age, on one of two diets that differed only in the type of fat content (virgin olive oil or sunflower oil) to compare the composition of exocrine pancreatic secretion in the basal period and in response to food. In resting pancreatic flow, electrolytes and the specific activities of amylase, lipase and chymotrypsin were similar in both experimental groups. However, lipase and amylase outputs, and amylase and protein concentrations were significantly higher in the group fed on the diet rich in sunflower oil. Food intake was not followed by any change in flow-rate or electrolyte or protein content in the group given the diet rich in olive oil. Amylase activity and output were also lower in this group, as was lipase output, whereas activity and specific activity of chymotrypsin were lower in dogs fed on the diet containing sunflower oil. The differences traceable to the composition of the two types of dietary fat supplied may be related to the balance between factors that stimulate and inhibit pancreatic secretion.

Keywords

Dietary fatPancreatic secretionDog
Type
Diet and Lipid Metabolism
Information
British Journal of Nutrition , Volume 64 , Issue 2 , September 1990 , pp. 487 - 496
Copyright
Copyright © The Nutrition Society 1990

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